stores/yaml: use assert in tests

Signed-off-by: Martin Holst Swende <martin@swende.se>

Author: holiman

stores/yaml/store_test.go

@@ -284,7 +284,7 @@ func TestComment7(t *testing.T) {
 func TestDuplicateAttributes(t *testing.T) {
 	// Duplicate keys are _not_ valid yaml.
 	//
-	// See https://yaml.org/spec/1.2.2/
+	// See https://yaml.org/spec/1.2.2/#mapping
 	// > The content of a mapping node is an unordered set of key/value node pairs,
 	// > with the restriction that each of the keys is unique.
 	//
@@ -297,13 +297,9 @@ rootunique:
 `
 	s := new(Store)
 	_, err := s.LoadPlainFile([]byte(data))
-	if err == nil {
-		t.Errorf("Expected error")
-	}
-	if have, want := err.Error(), `yaml: unmarshal errors:
-  line 3: mapping key "hello" already defined at line 2`; have != want {
-		t.Errorf("have '%v', want '%v'", have, want)
-	}
+	assert.NotNil(t, err)
+	assert.Equal(t, `yaml: unmarshal errors:
+  line 3: mapping key "hello" already defined at line 2`, err.Error())
 }
 
 func TestReservedAttributes(t *testing.T) {
@@ -313,10 +309,6 @@ sops: The attribute 'sops' must be rejected, otherwise the file cannot be opened
 `
 	s := new(Store)
 	_, err := s.LoadPlainFile([]byte(data))
-	if err == nil {
-		t.Errorf("Expected error")
-	}
-	if have, want := err.Error(), `YAML doc used reserved word 'sops'`; have != want {
-		t.Errorf("have '%v', want '%v'", have, want)
-	}
+	assert.NotNil(t, err)
+	assert.Equal(t, `YAML doc used reserved word 'sops'`, err.Error())
 }